– 96 –
• IC601 DISPLAY CONTROL ( TMP87CM74AF)
Pin No.
Pin Name I/O Function
1 to 6 LED3 to LED8 O LED driver output
7 VSS – Ground
8 X OUT O
9 X IN I
10 RESET I Reset signal input from main controller
11 LED9 O
12 LED10 O
13 TEST I Connected ground
14 to 18 LED11 to LED15 O LED driver output
19 VOL A I
20 VOL B I
21 JOG A I
22 JOG B I
23 SCL O Serial clock input from master controller
24 SDA O Serial data input from master controller
25 L. SEL O LED select signal output
26 to 29 KEY 0 to KEY 3 I Key input
30 MODEL I Version select signal input
31 (LED 16 OPEN) – LED driver output (Not used)
32 L + R I Spectrum analyzer (high frequency) input
33 SIRCS I Remote commander signal input
34 to 37
SPEANA 1 to SPEANA 4
I Spectrum analyzer input
38 VASS – Ground
39 VAREF I Analog reference voltage input
40 VDD – Power supply (+5V)
41 to 53 GR 1 to GR13 O FL gride signal output
54 to 77 SEG 1 to SEG 24 O FL segment signal output
78 VKK – Power supply (–25V) for FL segment signal output
79 LED 1 O
80 LED 2 O
X’tall (8MHz)
• Abbreviation
FL : Fluorescent indicator tube
LED driver output
Rotary encoder (S602) pulse input
Rotaly encoder (S601) pulse input
LED driver output
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